CN110243719A - The measuring method of water-insoluble in a kind of sodium humate - Google Patents
The measuring method of water-insoluble in a kind of sodium humate Download PDFInfo
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- CN110243719A CN110243719A CN201910697568.6A CN201910697568A CN110243719A CN 110243719 A CN110243719 A CN 110243719A CN 201910697568 A CN201910697568 A CN 201910697568A CN 110243719 A CN110243719 A CN 110243719A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The present invention provides a kind of measuring methods of water-insoluble in sodium humate, belong to chemical experiment detection field.Its technical solution are as follows: the measuring method the following steps are included: S1, water-insoluble extraction, S2, suction filtration, S3, weighing, S4, result calculate.The invention has the benefit that being adsorbed on sodium humate on nylon filtering cloth using nylon filtering cloth, substance only not soluble in water is just stayed on filter cloth, and filtering is changed to filter, water consumption is reduced, and detection time shortens, efficiency improves, and testing result is accurate and stablizes.
Description
Technical field
The present invention relates to a kind of a kind of measurement sides of water-insoluble in chemical experiment detection field more particularly to sodium humate
Method.
Background technique
It is colourless to filtrate that insoluble matter is washed with water to description in water insoluble substance determination step in existing standard, is not accounted for
The characteristic of sodium humate.Sodium humate is a kind of macromolecular organic monoacid sodium salt with multiple functions, and structure is more complicated,
With colloid property and adsorption capacity.Water is measured in existing standard, and insoluble matter is not filtered with middling speed quantitative filter paper, is then washed with water
It washs, does not account for sodium humate to the adsorptivity of filter paper, sodium humate is adsorbed on filter paper in washing process, and filtering is very
Slowly, it is colourless with a few hours to be washed with water to filtrate, detection time is caused to extend, in addition knot detection fruit be also not it is very accurate and
Stablize.
Summary of the invention
Nylon filtering cloth is used the purpose of the present invention is to provide a kind of, is adsorbed on sodium humate on nylon filtering cloth, only
There is substance not soluble in water just to stay on filter cloth, and filtering is changed to filter, water consumption is reduced, and detection time shortens, efficiency
It improves, the measuring method of water-insoluble in the accurate and stable sodium humate of testing result.
The present invention is realized by following measure:
The measuring method of water-insoluble in a kind of sodium humate, which is characterized in that the measuring method the following steps are included:
The extraction of S1, water-insoluble: it is accurately weighed to weigh sodium humate sample 1.0g, and sodium humate sample is put into 250mL cone
In shape bottle, 70mL water is added in precision, and conical flask is placed in thermostat water bath, is heated 30 minutes in boiling water bath, takes out cone
Shape bottle is cooled to room temperature, then by conical flask test solution and insoluble matter be transferred in centrifuge tube completely, centrifuge tube is put into centrifugation
In machine, centrifugal treating 5 minutes, takes out centrifuge tube and be immediately buckled to centrifuge tube, pour out solution all, obtain water-insoluble；
S2, suction filtration: drying nylon filtering cloth and weighing bottle 30 minutes in 110 DEG C of ± 2 DEG C of drying boxes in advance, weighs nylon filtering cloth
With the quality of weighing bottle, and record；On a buchner funnel the nylon filtering cloth tiling after drying, it is soaked with water, guarantees nylon filter
Cloth and funnel contact are close, Buchner funnel are mounted on bottle,suction, and bottle,suction is connect with Suction filtration device, step S1 is mentioned
The water-insoluble taken is transferred on nylon filtering cloth with water and is filtered, and water-insoluble, washing to filter are washed with water during filtering
Liquid is colourless, in the weighing bottle used before insoluble matter and nylon filtering cloth are put into together, dries 2 in 110 DEG C of ± 2 DEG C of drying boxes
Hour；
S3, weighing: taking out the weighing bottle dried in S2 step, be cooled to room temperature weighing, repeatedly dry, cooling and weighing, until
Difference≤the 0.001g weighed twice in succession；
S4, result calculate: the content of water-insoluble in sodium humate sample solution is indicated with mass fraction X,
；
In formula:
X --- the content of water-insoluble, % in sample；
The quality of m1 --- weighing bottle, nylon filtering cloth and water-insoluble, g；
The quality of m0 --- weighing bottle and filter paper, g；
The quality of m --- sample, g.
Specific feature of the invention is also:
Centrifuge speed is set as 4500r/min in step S2.
The invention has the benefit that sodium humate is adsorbed on nylon filtering cloth using nylon filtering cloth, it is only insoluble
It is just stayed on filter cloth in the substance of water, and filtering is changed to filter, water consumption is reduced, and detection time shortens, and efficiency improves, inspection
It is accurate and stable to survey result.
Specific embodiment
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
Embodiment 1
The measuring method of water-insoluble in a kind of sodium humate, which is characterized in that the measuring method the following steps are included:
The extraction of S1, water-insoluble: it is accurately weighed to weigh sodium humate sample 1.0g, and sodium humate sample is put into 250mL cone
In shape bottle, 70mL water is added in precision, and conical flask is placed in thermostat water bath, is heated 30 minutes in boiling water bath, takes out cone
Shape bottle is cooled to room temperature, then by conical flask test solution and insoluble matter be transferred in centrifuge tube completely, centrifuge tube is put into centrifugation
In machine, centrifugal treating 5 minutes, takes out centrifuge tube and be immediately buckled to centrifuge tube, pour out solution all, obtain water-insoluble；
S2, suction filtration: drying nylon filtering cloth and weighing bottle 30 minutes in 110 DEG C of ± 2 DEG C of drying boxes in advance, weighs nylon filtering cloth
With the quality of weighing bottle, and record；On a buchner funnel the nylon filtering cloth tiling after drying, it is soaked with water, guarantees nylon filter
Cloth and funnel contact are close, Buchner funnel are mounted on bottle,suction, and bottle,suction is connect with Suction filtration device, step S1 is mentioned
The water-insoluble taken is transferred on nylon filtering cloth with water and is filtered, and water-insoluble, washing to filter are washed with water during filtering
Liquid is colourless, in the weighing bottle used before insoluble matter and nylon filtering cloth are put into together, dries 2 in 110 DEG C of ± 2 DEG C of drying boxes
Hour；
S3, weighing: taking out the weighing bottle dried in S2 step, be cooled to room temperature weighing, repeatedly dry, cooling and weighing, until
Difference≤the 0.001g weighed twice in succession；
S4, result calculate: the content of water-insoluble in sodium humate sample solution is indicated with mass fraction X,
；
In formula:
X --- the content of water-insoluble, % in sample；
The quality of m1 --- weighing bottle, nylon filtering cloth and water-insoluble, g；
The quality of m0 --- weighing bottle and filter paper, g；
The quality of m --- sample, g.
Specific feature of the invention is also:
Centrifuge speed is set as 4500r/min in step S2.
The choosing of the inventor of the measuring method of water-insoluble nylon filtering cloth and filter paper in measuring method in this sodium humate
It selects, has carried out series of experiment research, it is determined that this measuring method makes it compared with prior art and have significantly to protrude excellent
Gesture.
Experiment, nylon filtering cloth and filter paper filter effect Experimental comparison in the measuring method of water-insoluble in sodium humate
1, instrument and reagent
Assay balance, electrically heated drying cabinet (temperature control is at 110 DEG C ± 2 DEG C), thermostat water bath.Centrifuge tube (100mL), centrifugation
Other laboratory all purpose instrument equipment such as machine, middling speed quantitative filter paper, nylon filtering cloth, Suction filtration device；Agents useful for same is that analysis is pure,
Use for laboratory water should meet tertiary effluent requirement as defined in GB/T 6682.
2, experimental method
2.1, experimental group one
Using the measuring method of water-insoluble in the sodium humate of above-described embodiment 1, filtered (for the first time using nylon filtering cloth
Experiment), five groups of experiments are set and number (1,2,3,4,5) to it, wherein take two Duplicate Samples to carry out in each group experiment parallel
Test, each group final result is quasi- with the arithmetic mean of instantaneous value of two Duplicate Samples results, as a result should indicate that (water is not to 2 significant digits
Content≤20% of molten object, parallel test allow absolute difference≤1%；The content > 20% of water-insoluble, parallel test allow absolute
Difference≤2%), it as a result see the table below 1.
1 nylon filtering cloth of table filters measurement (testing for the first time)
2.2, experimental group two
Using the measuring method of water-insoluble in the sodium humate of above-described embodiment 1, filtered (second using nylon filtering cloth
Experiment), five groups of experiments are set and number (1,2,3,4,5) to it, wherein take two Duplicate Samples to carry out in each group experiment parallel
Test, each group final result is quasi- with the arithmetic mean of instantaneous value of two Duplicate Samples results, as a result should indicate that (water is not to 2 significant digits
Content≤20% of molten object, parallel test allow absolute difference≤1%；The content > 20% of water-insoluble, parallel test allow absolute
Difference≤2%), it as a result see the table below 2.
2 nylon filtering cloth of table filters measurement (testing for the first time)
2.3, experimental group three
It is used using the measuring method of water-insoluble in the sodium humate of above-described embodiment 1, and by the nylon filtering cloth in embodiment 1
Filter paper replacement, and filtered, five groups of experiments are set and number (1,2,3,4,5) to it, wherein two are taken in each group experiment
Duplicate Samples carry out parallel test, and each group final result is quasi- with the arithmetic mean of instantaneous value of two Duplicate Samples results, as a result should indicate to small
(content≤20% of water-insoluble, parallel test allow absolute difference≤1% two after several points；The content > 20% of water-insoluble,
Parallel test allows absolute difference≤2%), it as a result see the table below 3.
The measurement of 3 filter cloth suction filtering of table
2.4, experimental group four
2.4.1, test method:
Step 1: it is accurately weighed to weigh sodium humate sample 1.0g, sodium humate sample is put into 250mL conical flask, it is accurate
70mL water is added, conical flask is placed in thermostat water bath, is heated 30 minutes in boiling water bath, takes out conical flask and is cooled to room
Temperature, then by conical flask test solution and insoluble matter be transferred in centrifuge tube completely, centrifuge tube is put into a centrifuge, centrifugal treating
It 5 minutes, takes out centrifuge tube and is immediately buckled to centrifuge tube, pour out solution all, obtain water-insoluble；
Step 2: quantitative filter paper and weighing bottle are dried 30 minutes in 110 DEG C of ± 2 DEG C of drying boxes in advance, quantitative filter paper is weighed
With the quality of weighing bottle, and record；On a buchner funnel the quantitative filter paper tiling after drying, it is soaked with water, guarantees quantitative filter
Paper and funnel contact are close, and the water-insoluble that step 1 is extracted is transferred on filter paper with water and is filtered, is used in filter process
Water washing water-insoluble, washing is colourless to filtrate, in the weighing bottle used before insoluble matter and filter paper are put into together, 110
It is dried 2 hours in DEG C ± 2 DEG C of drying boxes；
Step 3: taking out the weighing bottle dried in S2 step, it is cooled to room temperature weighing, repeatedly dry, cooling and weighing, until even
Continuous difference≤the 0.001g weighed twice；
Step 4: result calculates: the content of water-insoluble in sodium humate sample solution is indicated with mass fraction X,
；
In formula:
X --- the content of water-insoluble, % in sample；
The quality of m1 --- weighing bottle, filter paper and water-insoluble, g；
The quality of m0 --- weighing bottle and filter paper, g；
The quality of m --- sample, g.
Five groups of experiments are respectively set and number (1,2,3,4,5) to it, wherein each group experiment in take two Duplicate Samples into
Row parallel test, each group final result is quasi- with the arithmetic mean of instantaneous value of two Duplicate Samples results, two after as a result should indicating to decimal point
(content≤20% of water-insoluble, parallel test allow absolute difference≤1% for position；The content > 20% of water-insoluble, parallel test
Allow absolute difference≤2%), it as a result see the table below 4.
The filtering measurement of 4 filter paper of table
3, conclusion
3.1, the final result in conjunction with table 1 and 2 can be seen that each group parallel test absolute difference in experimental group one and experimental group two
Respectively less than 1%, meeting the requirements, (content≤20% of water-insoluble, parallel test allow absolute difference≤1%；The content of water-insoluble
> 20%, parallel test allow absolute difference≤2%), it can be seen that it carries out filtering in the sodium humate measured using nylon filtering cloth
Water insoluble matter content precision is higher, and in table 3, each group parallel test absolute difference is greater than 1% and does not meet there are more in experimental group three
It is required that (content≤20% of water-insoluble, parallel test allow absolute difference≤1%；The content > 20% of water-insoluble, it is parallel to try
Test permission absolute difference≤2%), it can be seen that it is accurate that water insoluble matter content in the sodium humate measured is filtered using filter paper
For degree for experimental group one and experimental group two, the precision of experimental group three is lower.
3.2, in conjunction with the final data of table 1,2 and 3,5 as a result be see the table below.
5 experimental group one of table, experimental group two and experimental group three compare
From table 3 it is observed that three each group of data of experimental group is above the final result of experimental group one and experimental group two, can see
It is measured using nylon filtering cloth suction filtration and is measured compared to using filter paper filtering out, is measured using nylon filtering cloth suction filtration
Result it is more accurate.
3.3, in conjunction with the final data of table 1,2 and 3,6 as a result be see the table below.
6 experimental group three of table and experimental group four compare
It can be seen that in experimental group three each group parallel test absolute difference better than in experimental group four in conjunction with the final result of table 3 and 4
(content≤20% of water-insoluble, parallel test allow absolute difference≤1% to each group parallel test absolute difference；Water-insoluble
Content > 20%, parallel test allow absolute difference≤2%), it can be seen that water in the sodium humate measured by the way of filtering
Insolubles content precision is higher, and in table 6, data are integrally better than four data of experimental group in experimental group three, it can be seen that using pumping
Filter mode is measured to be measured compared to using filtering, and the result being measured using suction filtration is more accurate.
Technical characteristic of the present invention without description can realize that details are not described herein by or using the prior art, certainly,
The above description is not a limitation of the present invention, and the present invention is also not limited to the example above, the ordinary skill of the art
The variations, modifications, additions or substitutions that personnel are made within the essential scope of the present invention also should belong to protection model of the invention
It encloses.
Claims (2)
1. the measuring method of water-insoluble in a kind of sodium humate, which is characterized in that the measuring method the following steps are included:
The extraction of S1, water-insoluble: it is accurately weighed to weigh sodium humate sample 1.0g, and sodium humate sample is put into 250mL cone
In shape bottle, 70mL water is added in precision, and conical flask is placed in thermostat water bath, is heated 30 minutes in boiling water bath, takes out cone
Shape bottle is cooled to room temperature, then by conical flask test solution and insoluble matter be transferred in centrifuge tube completely, centrifuge tube is put into centrifugation
In machine, centrifugal treating 5 minutes, takes out centrifuge tube and be immediately buckled to centrifuge tube, pour out solution all, obtain water-insoluble；
S2, suction filtration: drying nylon filtering cloth and weighing bottle 30 minutes in 110 DEG C of ± 2 DEG C of drying boxes in advance, weighs nylon filtering cloth
With the quality of weighing bottle, and record；On a buchner funnel the nylon filtering cloth tiling after drying, it is soaked with water, guarantees nylon filter
Cloth and funnel contact are close, Buchner funnel are mounted on bottle,suction, and bottle,suction is connect with Suction filtration device, step S1 is mentioned
The water-insoluble taken is transferred on nylon filtering cloth with water and is filtered, and water-insoluble, washing to filter are washed with water during filtering
Liquid is colourless, in the weighing bottle used before insoluble matter and nylon filtering cloth are put into together, dries 2 in 110 DEG C of ± 2 DEG C of drying boxes
Hour；
S3, weighing: taking out the weighing bottle dried in S2 step, be cooled to room temperature weighing, repeatedly dry, cooling and weighing, until
Difference≤the 0.001g weighed twice in succession；
S4, result calculate: the content of water-insoluble in sodium humate sample solution is indicated with mass fraction X,
；
In formula:
X --- the content of water-insoluble, % in sample；
The quality of m1 --- weighing bottle, nylon filtering cloth and water-insoluble, g；
The quality of m0 --- weighing bottle and filter paper, g；
The quality of m --- sample, g.
2. the measuring method of water-insoluble in sodium humate according to claim 1, which is characterized in that be centrifuged in step S2
Machine revolving speed is set as 4500r/min.
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| CN201910697568.6A CN110243719A (en) | 2019-07-31 | 2019-07-31 | The measuring method of water-insoluble in a kind of sodium humate |
| PCT/CN2020/091682 WO2021017592A1 (en) | 2019-07-31 | 2020-05-22 | Method for measuring water insoluble substances in sodium humate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006962A (en) * | 2019-12-30 | 2020-04-14 | 陕西延长石油（集团）有限责任公司 | Method for rapidly determining content of toluene insoluble substances in heavy oil |
| CN111678833A (en) * | 2020-06-03 | 2020-09-18 | 唐山三友化工股份有限公司 | Method for measuring content of water insoluble substances in soda ash by using microporous filter membrane |
| CN112129666A (en) * | 2020-09-24 | 2020-12-25 | 白银启源环保科技有限公司 | Soil conditioner and preparation method thereof |
| WO2021017592A1 (en) * | 2019-07-31 | 2021-02-04 | 山东新希望六和集团有限公司 | Method for measuring water insoluble substances in sodium humate |
| CN114002188A (en) * | 2021-10-29 | 2022-02-01 | 山东省分析测试中心 | Analysis method of donkey-hide gelatin water-insoluble substance based on gravimetric analysis |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621029A (en) * | 2012-03-21 | 2012-08-01 | 云南昆钢煤焦化有限公司 | Measurement method of soft asphalt quinoline insoluble substance |
| CN103344518A (en) * | 2013-06-21 | 2013-10-09 | 乐凯华光印刷科技有限公司 | Determination method for insoluble substances in polymer |
| CN104897512A (en) * | 2015-05-28 | 2015-09-09 | 山东黄金矿业(莱州)有限公司精炼厂 | Rapid analysis method for acid insoluble substances in cyanide gold slime |
| CN107008053A (en) * | 2017-05-03 | 2017-08-04 | 山东东阿东盛阿胶产品科技开发有限公司 | A kind of donkey-hide gelatin stoste filtering technique |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104116087A (en) * | 2013-04-28 | 2014-10-29 | 湖州南浔新雅农产品开发有限公司 | Preparation process of scale jelly |
| CN104165883A (en) * | 2014-08-01 | 2014-11-26 | 湖北富邦科技股份有限公司 | Method for measuring sodium in sodium humate |
| CN205981978U (en) * | 2016-06-14 | 2017-02-22 | 陕西省石油化工研究设计院 | Fracturing fluid insoluble solid in water and residue survey device |
| JP6276458B2 (en) * | 2017-08-25 | 2018-02-07 | 株式会社クボタケミックス | Method for quantitative analysis of graphite |
| CN110243719A (en) * | 2019-07-31 | 2019-09-17 | 山东新希望六和集团有限公司 | The measuring method of water-insoluble in a kind of sodium humate |
-
2019
- 2019-07-31 CN CN201910697568.6A patent/CN110243719A/en active Pending
-
2020
- 2020-05-22 WO PCT/CN2020/091682 patent/WO2021017592A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621029A (en) * | 2012-03-21 | 2012-08-01 | 云南昆钢煤焦化有限公司 | Measurement method of soft asphalt quinoline insoluble substance |
| CN103344518A (en) * | 2013-06-21 | 2013-10-09 | 乐凯华光印刷科技有限公司 | Determination method for insoluble substances in polymer |
| CN104897512A (en) * | 2015-05-28 | 2015-09-09 | 山东黄金矿业(莱州)有限公司精炼厂 | Rapid analysis method for acid insoluble substances in cyanide gold slime |
| CN107008053A (en) * | 2017-05-03 | 2017-08-04 | 山东东阿东盛阿胶产品科技开发有限公司 | A kind of donkey-hide gelatin stoste filtering technique |
Non-Patent Citations (2)
| Title |
|---|
| 武莹浣: ""油脂皂化反应———肥皂制取"的方法探究", 《科技展望》 * |
| 邹德乙等: "农业用腐植酸钠(送审稿)", 《中国腐殖酸行业低碳经济交流大会》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017592A1 (en) * | 2019-07-31 | 2021-02-04 | 山东新希望六和集团有限公司 | Method for measuring water insoluble substances in sodium humate |
| CN111006962A (en) * | 2019-12-30 | 2020-04-14 | 陕西延长石油（集团）有限责任公司 | Method for rapidly determining content of toluene insoluble substances in heavy oil |
| CN111678833A (en) * | 2020-06-03 | 2020-09-18 | 唐山三友化工股份有限公司 | Method for measuring content of water insoluble substances in soda ash by using microporous filter membrane |
| CN112129666A (en) * | 2020-09-24 | 2020-12-25 | 白银启源环保科技有限公司 | Soil conditioner and preparation method thereof |
| CN114002188A (en) * | 2021-10-29 | 2022-02-01 | 山东省分析测试中心 | Analysis method of donkey-hide gelatin water-insoluble substance based on gravimetric analysis |
| CN114002188B (en) * | 2021-10-29 | 2023-11-28 | 山东省分析测试中心 | Analysis method of donkey-hide gelatin water insoluble substances based on gravimetric analysis |
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| WO2021017592A1 (en) | 2021-02-04 |
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